Device for injecting medical powders



(No Mode/1 W. H.-ROWLAND. DEVICE FOR INJEGTING MEDICAL POWDERS.

No. 443,545. Patented Dec. 30, 1890.

qwflimaooeo 51440244 601 WW 744914 jmzgfi a 2%! \Zljt a/Homm o w lUNITED STATES PATENT OFFICE.

IVILLIAM II. ROIVLAND, OF ALBANY, OREGON.

DEVICE FOR INJECTING MEDICAL POWDERS.

SPECIFICATION forming part of Letters Patent No. 443,545, dated December30, 1890.

Application filed January 18, 1890. Serial No. 387,374. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. ROWLAND, a citizen of the United States,residing at Albany, in the county of Linn and State of Oregon, haveinvented a new and useful Hand-Bellows, of which the following is aspecification.

This invention has relation to a hand-bellows adapted to be used for thespraying or injecting of powders for medicinal or other purposes; andamong the objects in view'are to provide such a device, the injectortube or nipple of which may be readily withdrawn for the purpose offilling and refilling the elastic bellows or bulb, and to provide a capadapted to be screwed upon the nipple, whereby no loss of strength ofthe contents of the bellows can take place.

WVith these general objects in view the invention consists in certainfeatures of construction hereinafter specified, and particu larlypointed out in the claim.

Referring to the drawings, Figure 1 is a perspective of a hand-bellowsconstructed in accordance with my invention. Fig. 2 is a centrallongitudinal section. Fig. 3 is a detail longitudinal section of thenipple, and Fig. 4 a similar view in side elevation.

Like numerals of reference indicate like parts in all the figures of thedrawings.

In practicing my invention I employ a rubber bulb or bellows 1, of ashape and size convenient to be grasped and compressed by the hand, andsaid bulb terminates at one end in a neck 2, having an opening 3communicating with the interior of the bulb, the material surroundingsaid opening being formed considerably thicker than is the Wall of thebulb at other points, whereby the rigidity and strength of the neck areincreased.

The discharge-tube at is provided with an annular disk or collar 5 atabout its center, the periphery of which is milled, whereby the tube asa whole may be removed or disconnected from the bulb by the hand of theoperator. The rear end of the tube is provided with a hemispherical head6, somewhat larger than the outer diameter of the tube and the openingin the neck, whereby said head is designed to be forced into theopening, and by reason of its being slightly enlarged is prevented fromtoo ready a withdrawal from the neck, the thickened portion of whichfits snugly around the tube above the head and terminates at the rearside of the annular flange 5. The opposite end of the tube is somewhatlarger and forms a nipple 7, conical at its end and having its exterioror body portion threaded, as at 8. The tube is provided with an internalbore 9, which at its outer extremity is reduced to a slight orifice 10,which occurs at the apex of the nipple. The nipple is surrounded by aleather washer 11, which rests upon the collar 5.

12 represents a removable cap having a milled outer surface 13 andinternal threaded annular recess 14, adapted to engage the threads ofthe nipple, the end of the cap being designed for binding snugly againstthe washer and forming a tight joint.

The operation of my invention will be readily apparent from theforegoing description. The bulb is filled with powder, either of amedicinal or odorous nature, and by removin g the cap and slightlycompressing the bulb the powder will be forced in fine jets through theorifice of the nipple.

Having described my invention, what I claim is In an atomizer, thecombination, with the elastic bulb reduced at one end to form a neck thewall of which is thickened, of the removable metallic tube mounted inthe neck, provided with a conical bore and at its inner end with ahemispherical head taking in rear of the thickened wall, with a circularmilled disk beyond the neck and provided with external threads, thewasher encircling the tube at the base of the threads and in front ofthe disk, and the internally-t-hreaded cap taking over the front end ofthe tube, substan ially as specified.

In testimony that I claim the foregoing as my own I have hereto afiixedmy signature in presence of two witnesses.

WILLIAM H. ROWLAND.

Witnelses:

GEO. W. GRAY, J. O. LITTLER.

